Introduction to Immunology and Immunity
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Questions and Answers

What is the function of cilia in the respiratory tract?

  • To entrap microorganisms (correct)
  • To provide physical protection
  • To secrete mucus
  • To produce tears
  • What is the main function of the mucous membranes in the gastrointestinal tract?

  • To secrete tears
  • To entrap microorganisms (correct)
  • To provide a flushing action
  • To move mucus-entrapped microorganisms out of the tract
  • Which substance is NOT found in tears for protecting the conjunctiva?

  • Lactic acid (correct)
  • IgA
  • Lactoferrin
  • Lysozyme
  • Which component provides physical and chemical protection to the conjunctiva?

    <p>Tears</p> Signup and view all the answers

    Which type of immunity is present since birth and acts against almost any foreign molecules and pathogens?

    <p>Innate immunity</p> Signup and view all the answers

    What is the main function of physical barriers in innate immunity?

    <p>Inhibit the growth of most microorganisms</p> Signup and view all the answers

    Which term refers to the ability of an organism to resist infections by pathogens?

    <p>Immunity</p> Signup and view all the answers

    Which type of immunity relies on previous exposure to a pathogen and has memory?

    <p>Adaptive immunity</p> Signup and view all the answers

    What is the characteristic of innate immunity with regard to its specificity and reliance on previous exposure?

    <p>Non-specific to any one pathogen and does not rely on previous exposure</p> Signup and view all the answers

    Which component provides the first line of defense against microorganisms in innate immunity?

    <p>Skin and mucous membranes</p> Signup and view all the answers

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